.content_box{
    width: 100%;
    min-height: 500px;
    display: flex;
  
    .nav_box {
      width: 260px;
      min-height: 100vh;
      background: #001529;
      box-sizing: border-box;
      padding-top: 70px;
      font-size: 24px;
      .el-menu-item {
        height: 60px;
        padding: 0;
  
        cursor: pointer;
        &:hover{
          transition: 0.3s;
          background: #263445;
        }
        span{
          height: 60px;
          line-height: 60px;
          color: #Bfcbd9;
          font-size: 14px;
  
        }
      }
      // .is-active{
      //   background: cadetblue;
      // }
        span{
          line-height: 50px;
          color: #Bfcbd9;
          font-size: 14px;
        }
    }
    .el-submenu{
      .el-submenu__title{
        cursor: pointer;
      }
    }
    
    .el-menu--inline{
      .el-menu-item{
        width: 225px;
        height: 55px;
        color: #fff;
        padding-left: 60px !important;
        line-height: 55px;
      }
    }
  }
  